1. Über Tschebyscheffsche Approximation mit verallgemeinerten rationalen Funktionen;Brosowski;Math. Z.,1965
2. A refinement of the Kolmogorov-criterion;Brosowski,1983
3. On the characterization of a set of optimal points and some applications;Brosowski,1983
4. Approximation by generalized rational functions;Cheney,1965
5. Generalized rational approximation;Cheney;J. SIAM Numer. Anal. Ser. B,1964